Connecticut Dams
1,225 dams tracked by the National Inventory of Dams
Total Dams
1,225
High Hazard
236
19.3%
Poor / Unsatisfactory
126
Average Age
115 yrs
Hazard Classification
High236 (19.3%)
Significant936 (76.4%)
Low53 (4.3%)
Condition Assessment
Satisfactory474 (38.7%)
Fair254 (20.7%)
Poor / Unsatisfactory126 (10.3%)
Not Rated371 (30.3%)
Federal
9
State
169
Local
254
Private
697
Tallest Dams
- Colebrook River Dam223 ft
- Mad River Flood Control Dam178 ft
- Nepaug Dam156 ft
- Shepaug 138 ft
- Saville Dam137 ft
High Hazard Dams
- Colebrook River DamHigh
- Mad River Flood Control DamHigh
- Nepaug DamHigh
- Shepaug High
- Saville DamHigh
Poor Condition Dams
All Dams in Connecticut
Showing 951–975 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Doolittle Lake Dam Litchfield County | 10 | 1920 | Significant | Satisfactory |
| Dooley Pond Dam Middlesex County | 24 | 1870 | High | Fair |
| Donovan Road Detention Basin Dam New Haven County | 7 | — | Significant | Not Rated |
| Dominick'S Pond Dam Fairfield County | 5 | — | Significant | Fair |
| Dolbeare Dam New London County | 7 | — | Significant | Not Rated |
| Dolan'S Pond Middlesex County | 5 | — | Significant | Not Rated |
| Dodson Pond Dam New London County | 22 | 1962 | Significant | Fair |
| Dobsonville Pond Dam Tolland County | 26 | 1900 | Significant | Fair |
| Dividend Pond-Upper Dam Hartford County | 24 | 1870 | Significant | Fair |
| Dingletown Road Dam Fairfield County | 7 | — | Significant | Not Rated |
| Dingle Brook Lane Dam Fairfield County | 8 | — | Significant | Not Rated |
| Dickinson (A.K.A. Kenyon) Pond Dam Windham County | 11 | 1949 | Significant | Not Rated |
| Deuses Pond Dam Middlesex County | 20 | 1916 | Significant | Satisfactory |
| Deraad Pond Dam Middlesex County | 10 | — | Significant | Not Rated |
| Dennis Pond Dam Tolland County | 14 | 1880 | Significant | Fair |
| Deer Lake Dam Middlesex County | 12 | 1920 | Significant | Satisfactory |
| Deep River Reservoir Dam New London County | 62 | 1926 | High | Satisfactory |
| Deep Hollow Reservoir Dam Middlesex County | 28 | 1854 | Significant | Satisfactory |
| Decew South Coventry Pond Dam Tolland County | 11 | 1900 | Significant | Not Rated |
| Deans Reservoir Dam New London County | 15 | 1888 | High | Fair |
| Dayville Emergency Spillway Windham County | 8 | 1925 | Low | Satisfactory |
| Dayton Pond Dam West Dayton Hill Road Dam New Haven County | 8 | — | Significant | Not Rated |
| Day Pond(Colchester) New London County | 10 | 1936 | Low | Not Rated |
| Davis Pond Dam Fairfield County | 12 | — | Significant | Satisfactory |
| Davelay Pond (A.K.A. Pond View #1) Dam Litchfield County | 7 | — | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.